obj-m :=start.o
start-objs := hello.o
LINUX_KERNEL := $(shell uname -r)
LINUX_KERNEL_PATH :=/usr/src/linux-headers-${LINUX_KERNEL}/
PWD :=$(shell pwd)  
modules :
	$(MAKE) -C $(LINUX_KERNEL_PATH) M=$(PWD) modules  
.PHONEY:clean  
clean :
	rm -f *.o *.ko *.mod.c 
